Home / 1,290,649.30-1,781,022.78-717,677.14

Finding the Fourth Proportional to 1,290,649.30, 1,781,022.78 and 717,677.14

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Solution

The fourth proportional to 1,290,649.30, 1,781,022.78 and 717,677.14 is: 990,353.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,649.30 : 1,781,022.78 = 717,677.14 : x
  2. Step 2: Convert to fraction form
    1,290,649.30/1,781,022.78 = 717,677.14/x
  3. Step 3: Cross multiply
    1,290,649.30x = 1,781,022.78 × 717,677.14
  4. Step 4: Simplify right side
    1,290,649.30x = 1,278,199,335,025.25
  5. Step 5: Solve for x
    x = 1,278,199,335,025.25/1,290,649.30
  6. Step 6: Final answer
    x = 990,353.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.